[GIT PULL] percpu changes for v5.2-rc1

[Dennis Zhou]

Hi Linus,

This pull request includes my scan hint update which helps address
performance issues with heavily fragmented blocks.

The other change is a lockdep fix when freeing an allocation causes
balance work to be scheduled.

Thanks,
Dennis

The following changes since commit fa3d493f7a573b4e4e2538486e912093a0161c1b:

  Merge tag 'selinux-pr-20190312' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux (2019-03-13 11:10:42 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu.git for-5.2

for you to fetch changes up to 198790d9a3aeaef5792d33a560020861126edc22:

  percpu: remove spurious lock dependency between percpu and sched (2019-05-08 12:08:48 -0700)

----------------------------------------------------------------
Dennis Zhou (12):
      percpu: update free path with correct new free region
      percpu: do not search past bitmap when allocating an area
      percpu: introduce helper to determine if two regions overlap
      percpu: manage chunks based on contig_bits instead of free_bytes
      percpu: relegate chunks unusable when failing small allocations
      percpu: set PCPU_BITMAP_BLOCK_SIZE to PAGE_SIZE
      percpu: add block level scan_hint
      percpu: remember largest area skipped during allocation
      percpu: use block scan_hint to only scan forward
      percpu: make pcpu_block_md generic
      percpu: convert chunk hints to be based on pcpu_block_md
      percpu: use chunk scan_hint to skip some scanning

John Sperbeck (1):
      percpu: remove spurious lock dependency between percpu and sched

 include/linux/percpu.h |  12 +-
 mm/percpu-internal.h   |  15 +-
 mm/percpu-km.c         |   2 +-
 mm/percpu-stats.c      |   5 +-
 mm/percpu.c            | 549 ++++++++++++++++++++++++++++++++++---------------
 5 files changed, 405 insertions(+), 178 deletions(-)